1. write a function rule for finding the amount of daily pay, p, in the following situation: a bus driver
gets paid $100 each day plus $0.20 per kilometer, k. (1 point)
100 = 0.20 × k
p = 0.20 × 100 × k
p = 0.20k + 100
0.20k = 100 + p
use the table below to answer the following question.
2. do the values in the table represent a linear function? if so, what is the function rule?
(1 point)
the values do not show a linear function.
yes, the values show a linear function: y = x + 4.
yes, the values show a linear function: y = 2x + 2.
yes, the values show a linear function: y = 2x.
use the following graph to answer the question.
3. write an equation for the line shown in the graph.
(1 point)2/20/2015 writing rules for linear functions
… 2/2
10 = 4x
y = 2x + 10
y = 10x – 2
y = –x + 10
write a function rule for the total cost.
4. one frozen yogurt store sells frozen yogurt for $3.00 per cup and $1.25 per topping. write a linear
equation to show the total cost of a cup of frozen yogurt. then calculate the total price for one cup of
frozen yogurt with 4 toppings. (1 point)
y = 1.25x + 3; $5.00
y = 3x + 1.25; $13.25
y = 1.25x + 3; $8.00
y = 5x + 3; $8.00